Cations and Polyatomic Ions Practice

Vocabulary flashcards covering common metal cations with variable charges and essential polyatomic ions based on chemistry lecture notes.

$$\text{NH}_4^+$$

ammonium ion

$$\text{H}_3\text{O}^+$$

hydronium ion

$$\text{CN}^-$$

cyanide ion

$$\text{N}_3^-$$

azide ion

$$\text{C}_2\text{H}_3\text{O}_2^-$$

acetate ion

$$\text{CO}_3^{2-}$$

carbonate ion

$$\text{HCO}_3^-$$

hydrogen carbonate ion (or bicarbonate ion)

$$\text{C}_2\text{O}_4^{2-}$$

oxalate ion

$$\text{HC}_2\text{O}_4^-$$

hydrogen oxalate ion

$$\text{NO}_2^-$$

nitrite ion

$$\text{NO}_3^-$$

nitrate ion

$$\text{PO}_4^{3-}$$

phosphate ion

$$\text{HPO}_4^{2-}$$

hydrogen phosphate ion

$$\text{H}_2\text{PO}_4^-$$

dihydrogen phosphate ion

$$\text{SO}_3^{2-}$$

sulfite ion

$$\text{SO}_4^{2-}$$

sulfate ion

$$\text{HSO}_4^-$$

hydrogen sulfate ion (or bisulfate ion)

$$\text{S}_2\text{O}_3^{2-}$$

thiosulfate

$$\text{SCN}^-$$

thiocyanate

$$\text{HS}^-$$

thiolate

$$\text{OH}^-$$

hydroxide ion

$$\text{O}_2^{2-}$$

peroxide ion

$$\text{O}_2^-$$

superoxide ion

$$\text{ClO}^-$$

hypochlorite ion

$$\text{ClO}_2^-$$

chlorite ion

$$\text{ClO}_3^-$$

chlorate ion

$$\text{ClO}_4^-$$

perchlorate ion

$$\text{CrO}_4^{2-}$$

chromate ion

$$\text{Cr}_2\text{O}_7^{2-}$$

dichromate ion

$$\text{MnO}_4^-$$

permanganate ion

$$\text{H}^-$$

hydride ion

chromous ion

chromium(II) ion ($\text{Cr}^{2+}$)

chromic ion

chromium(III) ion ($\text{Cr}^{3+}$)

cobaltous ion

cobalt(II) ion ($\text{Co}^{2+}$)

cobaltic ion

cobalt(III) ion ($\text{Co}^{3+}$)

cuprous ion

copper(I) ion ($\text{Cu}^+$)

cupric ion

copper(II) ion ($\text{Cu}^{2+}$)

ferrous ion

iron(II) ion ($\text{Fe}^{2+}$)

ferric ion

iron(III) ion ($\text{Fe}^{3+}$)

plumbous ion

lead(II) ion ($\text{Pb}^{2+}$)

plumbic ion

lead(IV) ion ($\text{Pb}^{4+}$)

mercurous ion

mercury(I) ion, always present as $\text{Hg}_2^{2+}$

mercuric ion

mercury(II) ion ($\text{Hg}^{2+}$)

nickelous ion

nickel(II) ion ($\text{Ni}^{2+}$)

nickelic ion

nickel(III) ion ($\text{Ni}^{3+}$)

stannous ion

tin(II) ion ($\text{Sn}^{2+}$)

stannic ion

tin(IV) ion ($\text{Sn}^{4+}$)

-ic vs. -ous suffixes

-ic suffix denotes the higher charge/oxidation state, whereas -ous suffix denotes the lower charge/oxidation state